1 /* crypto/cryptlib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
56 * All rights reserved.
57 *
58 * This package is an SSL implementation written
59 * by Eric Young (eay@cryptsoft.com).
60 * The implementation was written so as to conform with Netscapes SSL.
61 *
62 * This library is free for commercial and non-commercial use as long as
63 * the following conditions are aheared to. The following conditions
64 * apply to all code found in this distribution, be it the RC4, RSA,
65 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
66 * included with this distribution is covered by the same copyright terms
67 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
68 *
69 * Copyright remains Eric Young's, and as such any Copyright notices in
70 * the code are not to be removed.
71 * If this package is used in a product, Eric Young should be given attribution
72 * as the author of the parts of the library used.
73 * This can be in the form of a textual message at program startup or
74 * in documentation (online or textual) provided with the package.
75 *
76 * Redistribution and use in source and binary forms, with or without
77 * modification, are permitted provided that the following conditions
78 * are met:
79 * 1. Redistributions of source code must retain the copyright
80 * notice, this list of conditions and the following disclaimer.
81 * 2. Redistributions in binary form must reproduce the above copyright
82 * notice, this list of conditions and the following disclaimer in the
83 * documentation and/or other materials provided with the distribution.
84 * 3. All advertising materials mentioning features or use of this software
85 * must display the following acknowledgement:
86 * "This product includes cryptographic software written by
87 * Eric Young (eay@cryptsoft.com)"
88 * The word 'cryptographic' can be left out if the rouines from the library
89 * being used are not cryptographic related :-).
90 * 4. If you include any Windows specific code (or a derivative thereof) from
91 * the apps directory (application code) you must include an acknowledgement:
92 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
93 *
94 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
95 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
97 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
98 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
99 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
100 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
102 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
103 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
104 * SUCH DAMAGE.
105 *
106 * The licence and distribution terms for any publically available version or
107 * derivative of this code cannot be changed. i.e. this code cannot simply be
108 * copied and put under another distribution licence
109 * [including the GNU Public Licence.]
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECDH support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116
117 #include "cryptlib.h"
118 #include <openssl/safestack.h>
119 #include <pthread.h>
120
121 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
122 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
123 #endif
124
125 DECLARE_STACK_OF(CRYPTO_dynlock)
126
127 /* real #defines in crypto.h, keep these upto date */
128 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
129 {
130 "<<ERROR>>",
131 "err",
132 "ex_data",
133 "x509",
134 "x509_info",
135 "x509_pkey",
136 "x509_crl",
137 "x509_req",
138 "dsa",
139 "rsa",
140 "evp_pkey",
141 "x509_store",
142 "ssl_ctx",
143 "ssl_cert",
144 "ssl_session",
145 "ssl_sess_cert",
146 "ssl",
147 "ssl_method",
148 "rand",
149 "rand2",
150 "debug_malloc",
151 "BIO",
152 "gethostbyname",
153 "getservbyname",
154 "readdir",
155 "RSA_blinding",
156 "dh",
157 "debug_malloc2",
158 "dso",
159 "dynlock",
160 "engine",
161 "ui",
162 "ecdsa",
163 "ec",
164 "ecdh",
165 "bn",
166 "ec_pre_comp",
167 "store",
168 "comp",
169 "fips",
170 "fips2",
171 #if CRYPTO_NUM_LOCKS != 41
172 # error "Inconsistency between crypto.h and cryptlib.c"
173 #endif
174 };
175
176 /* This is for applications to allocate new type names in the non-dynamic
177 array of lock names. These are numbered with positive numbers. */
178 static STACK_OF(OPENSSL_STRING) *app_locks=NULL;
179
180 /* For applications that want a more dynamic way of handling threads, the
181 following stack is used. These are externally numbered with negative
182 numbers. */
183 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
184
185 static pthread_mutex_t *solaris_openssl_locks;
186
187 static void (MS_FAR *locking_callback)(int mode,int type,
188 const char *file,int line)=0;
189 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
190 int type,const char *file,int line)=0;
191 #ifndef OPENSSL_NO_DEPRECATED
192 static unsigned long (MS_FAR *id_callback)(void)=0;
193 #endif
194 static void (MS_FAR *threadid_callback)(CRYPTO_THREADID *)=0;
195 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
196 (const char *file,int line)=0;
197 static void (MS_FAR *dynlock_lock_callback)(int mode,
198 struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
199 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
200 const char *file,int line)=0;
201
202 int CRYPTO_get_new_lockid(char *name)
203 {
204 char *str;
205 int i;
206
207 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
208 /* A hack to make Visual C++ 5.0 work correctly when linking as
209 * a DLL using /MT. Without this, the application cannot use
210 * any floating point printf's.
211 * It also seems to be needed for Visual C 1.5 (win16) */
212 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
213 #endif
214
215 if ((app_locks == NULL) && ((app_locks=sk_OPENSSL_STRING_new_null()) == NULL))
216 {
217 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
218 return(0);
219 }
220 if ((str=BUF_strdup(name)) == NULL)
221 {
222 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
223 return(0);
224 }
225 i=sk_OPENSSL_STRING_push(app_locks,str);
226 if (!i)
227 OPENSSL_free(str);
228 else
229 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
230 return(i);
231 }
232
233 int CRYPTO_num_locks(void)
234 {
235 return CRYPTO_NUM_LOCKS;
236 }
237
238 int CRYPTO_get_new_dynlockid(void)
239 {
240 int i = 0;
241 CRYPTO_dynlock *pointer = NULL;
242
243 if (dynlock_create_callback == NULL)
244 {
245 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
246 return(0);
247 }
248 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
249 if ((dyn_locks == NULL)
250 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
251 {
252 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
253 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
254 return(0);
255 }
256 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
257
258 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
259 if (pointer == NULL)
260 {
261 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
262 return(0);
263 }
264 pointer->references = 1;
265 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
266 if (pointer->data == NULL)
267 {
268 OPENSSL_free(pointer);
269 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
270 return(0);
271 }
272
273 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
274 /* First, try to find an existing empty slot */
275 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
276 /* If there was none, push, thereby creating a new one */
277 if (i == -1)
278 /* Since sk_push() returns the number of items on the
279 stack, not the location of the pushed item, we need
280 to transform the returned number into a position,
281 by decreasing it. */
282 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
283 else
284 /* If we found a place with a NULL pointer, put our pointer
285 in it. */
286 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
287 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
288
289 if (i == -1)
290 {
291 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
292 OPENSSL_free(pointer);
293 }
294 else
295 i += 1; /* to avoid 0 */
296 return -i;
297 }
298
299 void CRYPTO_destroy_dynlockid(int i)
300 {
301 CRYPTO_dynlock *pointer = NULL;
302 if (i)
303 i = -i-1;
304 if (dynlock_destroy_callback == NULL)
305 return;
306
307 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
308
309 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
310 {
311 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
312 return;
313 }
314 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
315 if (pointer != NULL)
316 {
317 --pointer->references;
318 #ifdef REF_CHECK
319 if (pointer->references < 0)
320 {
321 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
322 abort();
323 }
324 else
325 #endif
326 if (pointer->references <= 0)
327 {
328 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
329 }
330 else
331 pointer = NULL;
332 }
333 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
334
335 if (pointer)
336 {
337 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
338 OPENSSL_free(pointer);
339 }
340 }
341
342 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
343 {
344 CRYPTO_dynlock *pointer = NULL;
345 if (i)
346 i = -i-1;
347
348 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
349
350 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
351 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
352 if (pointer)
353 pointer->references++;
354
355 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
356
357 if (pointer)
358 return pointer->data;
359 return NULL;
360 }
361
362 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
363 (const char *file,int line)
364 {
365 return(dynlock_create_callback);
366 }
367
368 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
369 struct CRYPTO_dynlock_value *l, const char *file,int line)
370 {
371 return(dynlock_lock_callback);
372 }
373
374 void (*CRYPTO_get_dynlock_destroy_callback(void))
375 (struct CRYPTO_dynlock_value *l, const char *file,int line)
376 {
377 return(dynlock_destroy_callback);
378 }
379
380 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
381 (const char *file, int line))
382 {
383 dynlock_create_callback=func;
384 }
385
386 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
387 struct CRYPTO_dynlock_value *l, const char *file, int line))
388 {
389 dynlock_lock_callback=func;
390 }
391
392 void CRYPTO_set_dynlock_destroy_callback(void (*func)
393 (struct CRYPTO_dynlock_value *l, const char *file, int line))
394 {
395 dynlock_destroy_callback=func;
396 }
397
398
399 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
400 int line)
401 {
402 return(locking_callback);
403 }
404
405 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
406 const char *file,int line)
407 {
408 return(add_lock_callback);
409 }
410
411 /*
412 * This is the locking callback function which all applications will be
413 * using when CRYPTO_lock() is called.
414 */
415 static void solaris_locking_callback(int mode, int type, const char *file,
416 int line)
417 {
418 if (mode & CRYPTO_LOCK)
419 {
420 pthread_mutex_lock(&solaris_openssl_locks[type]);
421 }
422 else
423 {
424 pthread_mutex_unlock(&solaris_openssl_locks[type]);
425 }
426 }
427
428
429 /*
430 * This function is called when a child process is forked to setup its own
431 * global locking callback function ptr and mutexes.
432 */
433 static void solaris_fork_child(void)
434 {
435 /*
436 * clear locking_callback to indicate that locks should
437 * be reinitialized.
438 */
439 locking_callback = NULL;
440 solaris_locking_setup();
441 }
442
443 /*
444 * This function allocates and initializes the global mutex array, and
445 * sets the locking callback.
446 */
447 void solaris_locking_setup()
448 {
449 int i;
450 int num_locks;
451
452 /* locking callback is already setup. Nothing to do */
453 if (locking_callback != NULL)
454 {
455 return;
456 }
457
458 /*
459 * Set atfork handler so that child can setup its own mutexes and
460 * locking callbacks when it is forked
461 */
462 (void) pthread_atfork(NULL, NULL, solaris_fork_child);
463
464 /* allocate locks needed by OpenSSL */
465 num_locks = CRYPTO_num_locks();
466 solaris_openssl_locks =
467 OPENSSL_malloc(sizeof (pthread_mutex_t) * num_locks);
468 if (solaris_openssl_locks == NULL)
469 {
470 fprintf(stderr,
471 "solaris_locking_setup: memory allocation failure.\n");
472 abort();
473 }
474
475 /* initialize openssl mutexes */
476 for (i = 0; i < num_locks; i++)
477 {
478 pthread_mutex_init(&solaris_openssl_locks[i], NULL);
479 }
480 locking_callback = solaris_locking_callback;
481
482 }
483
484 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
485 const char *file,int line))
486 {
487 /* Calling this here ensures initialisation before any threads
488 * are started.
489 */
490 OPENSSL_init();
491
492 /*
493 * we now setup our own locking callback and mutexes, and disallow
494 * setting of another locking callback.
495 */
496 }
497
498 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
499 const char *file,int line))
500 {
501 add_lock_callback=func;
502 }
503
504 /* the memset() here and in set_pointer() seem overkill, but for the sake of
505 * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
506 * "equal" THREADID structs to not be memcmp()-identical. */
507 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
508 {
509 memset(id, 0, sizeof(*id));
510 id->val = val;
511 }
512
513 static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
514 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
515 {
516 unsigned char *dest = (void *)&id->val;
517 unsigned int accum = 0;
518 unsigned char dnum = sizeof(id->val);
519
520 memset(id, 0, sizeof(*id));
521 id->ptr = ptr;
522 if (sizeof(id->val) >= sizeof(id->ptr))
523 {
524 /* 'ptr' can be embedded in 'val' without loss of uniqueness */
525 id->val = (unsigned long)id->ptr;
526 return;
527 }
528 /* hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
529 * linear function over the bytes in 'ptr', the co-efficients of which
530 * are a sequence of low-primes (hash_coeffs is an 8-element cycle) -
531 * the starting prime for the sequence varies for each byte of 'val'
532 * (unique polynomials unless pointers are >64-bit). For added spice,
533 * the totals accumulate rather than restarting from zero, and the index
534 * of the 'val' byte is added each time (position dependence). If I was
535 * a black-belt, I'd scan big-endian pointers in reverse to give
536 * low-order bits more play, but this isn't crypto and I'd prefer nobody
537 * mistake it as such. Plus I'm lazy. */
538 while (dnum--)
539 {
540 const unsigned char *src = (void *)&id->ptr;
541 unsigned char snum = sizeof(id->ptr);
542 while (snum--)
543 accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
544 accum += dnum;
545 *(dest++) = accum & 255;
546 }
547 }
548
549 int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *))
550 {
551 if (threadid_callback)
552 return 0;
553 threadid_callback = func;
554 return 1;
555 }
556
557 void (*CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID *)
558 {
559 return threadid_callback;
560 }
561
562 void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
563 {
564 if (threadid_callback)
565 {
566 threadid_callback(id);
567 return;
568 }
569 #ifndef OPENSSL_NO_DEPRECATED
570 /* If the deprecated callback was set, fall back to that */
571 if (id_callback)
572 {
573 CRYPTO_THREADID_set_numeric(id, id_callback());
574 return;
575 }
576 #endif
577 /* Else pick a backup */
578 #ifdef OPENSSL_SYS_WIN16
579 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
580 #elif defined(OPENSSL_SYS_WIN32)
581 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
582 #elif defined(OPENSSL_SYS_BEOS)
583 CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
584 #else
585 /* For everything else, default to using the address of 'errno' */
586 CRYPTO_THREADID_set_pointer(id, (void*)&errno);
587 #endif
588 }
589
590 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
591 {
592 return memcmp(a, b, sizeof(*a));
593 }
594
595 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
596 {
597 memcpy(dest, src, sizeof(*src));
598 }
599
600 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
601 {
602 return id->val;
603 }
604
605 #ifndef OPENSSL_NO_DEPRECATED
606 unsigned long (*CRYPTO_get_id_callback(void))(void)
607 {
608 return(id_callback);
609 }
610
611 void CRYPTO_set_id_callback(unsigned long (*func)(void))
612 {
613 id_callback=func;
614 }
615
616 unsigned long CRYPTO_thread_id(void)
617 {
618 unsigned long ret=0;
619
620 if (id_callback == NULL)
621 {
622 #ifdef OPENSSL_SYS_WIN16
623 ret=(unsigned long)GetCurrentTask();
624 #elif defined(OPENSSL_SYS_WIN32)
625 ret=(unsigned long)GetCurrentThreadId();
626 #elif defined(GETPID_IS_MEANINGLESS)
627 ret=1L;
628 #elif defined(OPENSSL_SYS_BEOS)
629 ret=(unsigned long)find_thread(NULL);
630 #else
631 ret=(unsigned long)getpid();
632 #endif
633 }
634 else
635 ret=id_callback();
636 return(ret);
637 }
638 #endif
639
640 void CRYPTO_lock(int mode, int type, const char *file, int line)
641 {
642 #ifdef LOCK_DEBUG
643 {
644 CRYPTO_THREADID id;
645 char *rw_text,*operation_text;
646
647 if (mode & CRYPTO_LOCK)
648 operation_text="lock ";
649 else if (mode & CRYPTO_UNLOCK)
650 operation_text="unlock";
651 else
652 operation_text="ERROR ";
653
654 if (mode & CRYPTO_READ)
655 rw_text="r";
656 else if (mode & CRYPTO_WRITE)
657 rw_text="w";
658 else
659 rw_text="ERROR";
660
661 CRYPTO_THREADID_current(&id);
662 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
663 CRYPTO_THREADID_hash(&id), rw_text, operation_text,
664 CRYPTO_get_lock_name(type), file, line);
665 }
666 #endif
667 if (type < 0)
668 {
669 if (dynlock_lock_callback != NULL)
670 {
671 struct CRYPTO_dynlock_value *pointer
672 = CRYPTO_get_dynlock_value(type);
673
674 OPENSSL_assert(pointer != NULL);
675
676 dynlock_lock_callback(mode, pointer, file, line);
677
678 CRYPTO_destroy_dynlockid(type);
679 }
680 }
681 else
682 if (locking_callback != NULL)
683 locking_callback(mode,type,file,line);
684 }
685
686 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
687 int line)
688 {
689 int ret = 0;
690
691 if (add_lock_callback != NULL)
692 {
693 #ifdef LOCK_DEBUG
694 int before= *pointer;
695 #endif
696
697 ret=add_lock_callback(pointer,amount,type,file,line);
698 #ifdef LOCK_DEBUG
699 {
700 CRYPTO_THREADID id;
701 CRYPTO_THREADID_current(&id);
702 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
703 CRYPTO_THREADID_hash(&id), before,amount,ret,
704 CRYPTO_get_lock_name(type),
705 file,line);
706 }
707 #endif
708 }
709 else
710 {
711 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
712
713 ret= *pointer+amount;
714 #ifdef LOCK_DEBUG
715 {
716 CRYPTO_THREADID id;
717 CRYPTO_THREADID_current(&id);
718 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
719 CRYPTO_THREADID_hash(&id),
720 *pointer,amount,ret,
721 CRYPTO_get_lock_name(type),
722 file,line);
723 }
724 #endif
725 *pointer=ret;
726 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
727 }
728 return(ret);
729 }
730
731 const char *CRYPTO_get_lock_name(int type)
732 {
733 if (type < 0)
734 return("dynamic");
735 else if (type < CRYPTO_NUM_LOCKS)
736 return(lock_names[type]);
737 else if (type-CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
738 return("ERROR");
739 else
740 return(sk_OPENSSL_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));
741 }
742
743 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
744 defined(__INTEL__) || \
745 defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
746
747 unsigned int OPENSSL_ia32cap_P[2];
748 unsigned long *OPENSSL_ia32cap_loc(void)
749 { if (sizeof(long)==4)
750 /*
751 * If 32-bit application pulls address of OPENSSL_ia32cap_P[0]
752 * clear second element to maintain the illusion that vector
753 * is 32-bit.
754 */
755 OPENSSL_ia32cap_P[1]=0;
756 return (unsigned long *)OPENSSL_ia32cap_P;
757 }
758
759 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
760 #define OPENSSL_CPUID_SETUP
761 #if defined(_WIN32)
762 typedef unsigned __int64 IA32CAP;
763 #else
764 typedef unsigned long long IA32CAP;
765 #endif
766 void OPENSSL_cpuid_setup(void)
767 { static int trigger=0;
768 IA32CAP OPENSSL_ia32_cpuid(void);
769 IA32CAP vec;
770 char *env;
771
772 if (trigger) return;
773
774 trigger=1;
775 if ((env=getenv("OPENSSL_ia32cap"))) {
776 int off = (env[0]=='~')?1:0;
777 #if defined(_WIN32)
778 if (!sscanf(env+off,"%I64i",&vec)) vec = strtoul(env+off,NULL,0);
779 #else
780 if (!sscanf(env+off,"%lli",(long long *)&vec)) vec = strtoul(env+off,NULL,0);
781 #endif
782 if (off) vec = OPENSSL_ia32_cpuid()&~vec;
783 }
784 else
785 vec = OPENSSL_ia32_cpuid();
786
787 /*
788 * |(1<<10) sets a reserved bit to signal that variable
789 * was initialized already... This is to avoid interference
790 * with cpuid snippets in ELF .init segment.
791 */
792 OPENSSL_ia32cap_P[0] = (unsigned int)vec|(1<<10);
793 OPENSSL_ia32cap_P[1] = (unsigned int)(vec>>32);
794 }
795 #endif
796
797 #else
798 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
799 #endif
800 int OPENSSL_NONPIC_relocated = 0;
801 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
802 void OPENSSL_cpuid_setup(void) {}
803 #endif
804
805 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
806 #ifdef __CYGWIN__
807 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
808 #include <windows.h>
809 /* this has side-effect of _WIN32 getting defined, which otherwise
810 * is mutually exclusive with __CYGWIN__... */
811 #endif
812
813 /* All we really need to do is remove the 'error' state when a thread
814 * detaches */
815
816 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
817 LPVOID lpvReserved)
818 {
819 switch(fdwReason)
820 {
821 case DLL_PROCESS_ATTACH:
822 OPENSSL_cpuid_setup();
823 #if defined(_WIN32_WINNT)
824 {
825 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
826 IMAGE_NT_HEADERS *nt_headers;
827
828 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
829 {
830 nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
831 + dos_header->e_lfanew);
832 if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
833 hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
834 OPENSSL_NONPIC_relocated=1;
835 }
836 }
837 #endif
838 break;
839 case DLL_THREAD_ATTACH:
840 break;
841 case DLL_THREAD_DETACH:
842 break;
843 case DLL_PROCESS_DETACH:
844 break;
845 }
846 return(TRUE);
847 }
848 #endif
849
850 #if defined(_WIN32) && !defined(__CYGWIN__)
851 #include <tchar.h>
852 #include <signal.h>
853 #ifdef __WATCOMC__
854 #if defined(_UNICODE) || defined(__UNICODE__)
855 #define _vsntprintf _vsnwprintf
856 #else
857 #define _vsntprintf _vsnprintf
858 #endif
859 #endif
860 #ifdef _MSC_VER
861 #define alloca _alloca
862 #endif
863
864 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
865 int OPENSSL_isservice(void)
866 { HWINSTA h;
867 DWORD len;
868 WCHAR *name;
869 static union { void *p; int (*f)(void); } _OPENSSL_isservice = { NULL };
870
871 if (_OPENSSL_isservice.p == NULL) {
872 HANDLE h = GetModuleHandle(NULL);
873 if (h != NULL)
874 _OPENSSL_isservice.p = GetProcAddress(h,"_OPENSSL_isservice");
875 if (_OPENSSL_isservice.p == NULL)
876 _OPENSSL_isservice.p = (void *)-1;
877 }
878
879 if (_OPENSSL_isservice.p != (void *)-1)
880 return (*_OPENSSL_isservice.f)();
881
882 (void)GetDesktopWindow(); /* return value is ignored */
883
884 h = GetProcessWindowStation();
885 if (h==NULL) return -1;
886
887 if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
888 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
889 return -1;
890
891 if (len>512) return -1; /* paranoia */
892 len++,len&=~1; /* paranoia */
893 name=(WCHAR *)alloca(len+sizeof(WCHAR));
894 if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
895 return -1;
896
897 len++,len&=~1; /* paranoia */
898 name[len/sizeof(WCHAR)]=L'\0'; /* paranoia */
899 #if 1
900 /* This doesn't cover "interactive" services [working with real
901 * WinSta0's] nor programs started non-interactively by Task
902 * Scheduler [those are working with SAWinSta]. */
903 if (wcsstr(name,L"Service-0x")) return 1;
904 #else
905 /* This covers all non-interactive programs such as services. */
906 if (!wcsstr(name,L"WinSta0")) return 1;
907 #endif
908 else return 0;
909 }
910 #else
911 int OPENSSL_isservice(void) { return 0; }
912 #endif
913
914 void OPENSSL_showfatal (const char *fmta,...)
915 { va_list ap;
916 TCHAR buf[256];
917 const TCHAR *fmt;
918 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
919 HANDLE h;
920
921 if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
922 GetFileType(h)!=FILE_TYPE_UNKNOWN)
923 { /* must be console application */
924 va_start (ap,fmta);
925 vfprintf (stderr,fmta,ap);
926 va_end (ap);
927 return;
928 }
929 #endif
930
931 if (sizeof(TCHAR)==sizeof(char))
932 fmt=(const TCHAR *)fmta;
933 else do
934 { int keepgoing;
935 size_t len_0=strlen(fmta)+1,i;
936 WCHAR *fmtw;
937
938 fmtw = (WCHAR *)alloca(len_0*sizeof(WCHAR));
939 if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
940
941 #ifndef OPENSSL_NO_MULTIBYTE
942 if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
943 #endif
944 for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
945
946 for (i=0;i<len_0;i++)
947 { if (fmtw[i]==L'%') do
948 { keepgoing=0;
949 switch (fmtw[i+1])
950 { case L'0': case L'1': case L'2': case L'3': case L'4':
951 case L'5': case L'6': case L'7': case L'8': case L'9':
952 case L'.': case L'*':
953 case L'-': i++; keepgoing=1; break;
954 case L's': fmtw[i+1]=L'S'; break;
955 case L'S': fmtw[i+1]=L's'; break;
956 case L'c': fmtw[i+1]=L'C'; break;
957 case L'C': fmtw[i+1]=L'c'; break;
958 }
959 } while (keepgoing);
960 }
961 fmt = (const TCHAR *)fmtw;
962 } while (0);
963
964 va_start (ap,fmta);
965 _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
966 buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
967 va_end (ap);
968
969 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
970 /* this -------------v--- guards NT-specific calls */
971 if (check_winnt() && OPENSSL_isservice() > 0)
972 { HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
973 const TCHAR *pmsg=buf;
974 ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
975 DeregisterEventSource(h);
976 }
977 else
978 #endif
979 MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
980 }
981 #else
982 void OPENSSL_showfatal (const char *fmta,...)
983 { va_list ap;
984
985 va_start (ap,fmta);
986 vfprintf (stderr,fmta,ap);
987 va_end (ap);
988 }
989 int OPENSSL_isservice (void) { return 0; }
990 #endif
991
992 void OpenSSLDie(const char *file,int line,const char *assertion)
993 {
994 OPENSSL_showfatal(
995 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
996 file,line,assertion);
997 #if !defined(_WIN32) || defined(__CYGWIN__)
998 abort();
999 #else
1000 /* Win32 abort() customarily shows a dialog, but we just did that... */
1001 raise(SIGABRT);
1002 _exit(3);
1003 #endif
1004 }
1005
1006 void *OPENSSL_stderr(void) { return stderr; }
1007
1008 int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
1009 {
1010 size_t i;
1011 const unsigned char *a = in_a;
1012 const unsigned char *b = in_b;
1013 unsigned char x = 0;
1014
1015 for (i = 0; i < len; i++)
1016 x |= a[i] ^ b[i];
1017
1018 return x;
1019 }